Pocket motion picture device



Aug. 4, 1942. M. G. HoRwlTz FOCKET MOTON PICTURE DEVICE Filed Jan.

INVENTOF@ n Mdrzue C/ofwmg amzj" ATTORNEY Patented Aug. 4, 1942 UNITEOSTATES PATENT OFFICE 2,291,711 POCKET MOTION PICTURE DEvICE Manuel G. Horwitz, Bronx, N. Y. Application January 3,1941, serial No. 372,982

(C1. :ss-11) 6 Claims.

This invention relates to new and useful improvements in a pocket motion picture device. More specically, the invention contemplates the construction of a device as mentioned which is so small that it may be readily carried around in one's pocket.

Still further the invention proposes the construction of a motion picture device as mentioned which is characterized by a casing having an opening in one side, and a disc rotatively mounted beneath said opening and having a slot which scans across said opening when said disc rotates. It is proposed to provide means within the casing for supporting a web of developed or printed motion picture films which` may be of Celluloid, composition or of a continuous paper strip proposed to synchronize the rotating disc and means for moving the nlm ln aV certain way. More specifically, means is proposed for varying the relative position of the slot and a frame of the film to accomplish the synchronization mentioned. Still further the invention proposes to provide a source of light within the casing adapted to shine through or upon the web of film and the window opening for projecting or viewing the moving pictures.v

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing', and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a materialpart of this disclosure: f

Fig. 1 is a perspective view of a motion picture device constructed in accordance with this invention.

Fig. 2 is a horizontal sectional view taken on the line 2-2 of Fig. 1. l

Fig. 3' is an elevational view of Fig. 1 but illustrated with the front o1 the casing removed to expose interior parts.

` Fig. 4 is a perspective view of the disc used in the device.

Fig. 5 is a perspective view of a certain frame used in the device for guiding and holding the web of iilm.

Fig, 61s a schematic wiring diagram of the electric parts of the device.

Fig. rI is a vertical sectional view taken on the line 1-1 of Fig. 2.

Fig. 8 is a fragmentary enlarged vertical sectional viewof a portion of Fig. 7.

The pocket motion picture device, in accordance with this invention, includes a casing II) of box like construction having a side wall II arranged in the form of a door which may be Opened to give access to the interior of the casing, This door II is hingedly opened at one side by the hinge construction I2. The door II is normally held closed by hinges I3 mounted on the side walls thereof and having sections extendable across portionsof the door II and engageable with studs I4 mounted on the door. The casing I is provided with an opening l5 in the top wall thereof immediately adjacent the door II. This opening is closed with a lens I6.

A disc Il is rotatively mounted beneath the Opening I and is provided with a slot I8 which scans across the opening I5 when the disc i1 rotates. The disc Il is mounted on a spindle I9 which rotatively engages through the top wall of the casing I0. The spindle I9 is connected with a tubular shaft rotatively mounted upon the bottom wall of the casing I0.

Means is arranged within the casing for supporting a web of motion picture film across said opening I5. zontal shafts 2| and 22 rotatively mounted between the back wall of the casing I0 and the door Wall II thereof. A support frame 23 is mounted across the shafts 2I and 22. This support frame has a rod portion 232t with openings 24 adapted to slide upon the shafts 2| and 22. A pair of fingers 25 and 26 project from the rod portion 23a forwards. Another pair of L-shaped fingers 21 and 28 project from the rod portion 23 upwards and forwards.

A roll of lm 29 is mounted on one of the shafts, and is threaded across the portions 26, 21 and 25 as illustrated in Fig. 3 and engages upon a rewind roll 30 mounted on the other shaft. The shafts 2I and 22 have small blade portions 3l, and the spools of the rolls 29 and 30 have elongated openings 3I for receiving the blade portions 3|. The arrangement is such that the spools may be slipped off frontwards when the door II is open. The front ends of the shafts 2I and 22 are rotatively supported byengaging into receiving openings formed in the front wall door II as illustrated in Fig. 1. The shaft 2I has a projecting end provided with a handle 32 by which it may be turned. This handle is removable and may be placed on the square end 22' of shaft 22 as shown at 32', lto reverse the motion of the film 33.

synchronizing means the disc I1 and moving gaged on the support frame is provided for rotating the-film 33 which is en- 23. This synchronized means includes a wheel Il mounted on the shaft 2| and engaged by a drive element Il elimina a wheel t. mounted on the tubular shaft 2f. When the handle 32 is turned for drawing the film 31 on the rewind spool 3l, the motion will be transmitted simultaneously to rotate the tubular shaft 2l which indirectly rotates the disc i1.

Means is provided for varying the relative position of the slot Il and a frame of the nlm 33 in relation to the opening i5. This means includes a friction element Il xedly mounted on the spindle Il, and of truste-conical shape and normally engaging a frustconical shaped socket Il formed on an end of' the tubular shaft Il. 'I'he spindle I9 extends into the tubular shaft 2l. Its inner end is provided with a head Il. An expansion spring el is coaxially mounted on the spindle I! and acts against the head di and a washer I2 iixedly mounted within the tubular shaft 2l. More specifically, the spring ll urges the conical shaped friction element 3l against the socket 30 for coupling these parts together.

The tubular shaft 2l is rotatively supported by engaging through the bottom wall of the casing il. The bottom end of the tubular shaft I. is provided with a flange 43. A collar u is mounted on the tubular shaft 2| immediately adjacent the inner face of the bottom wall of the casing il for acting as a thrust bearing for rotatively sup porting the tubular shaft 2l upon the bottom wall of the casing il.

A battery Sois mounted within the casing il and is connected in a circuit 46 which includes a lamp l1 located beneath the opening I5 or directly beneath the shutter disc II to illuminate the film 33. 'Ihe circuit is controlled by a switch Il.

The operation of the device is as follows:

The window opening It is slightly narrower than the length of one frame of the nlm 33 to nearly completely expose a frame of said film when aligned with said opening. The synchroniaed means for rotating the disc I1 and moving the film is so proportioned that the slot il of the disc I1 moves across the opening Il while one frame moves from one side of the opening ,il to the other side in either direction. The synchronized means is also so proportioned that the disc I1 makes one complete revolution for an advance of one frame of the illm Il.

Whenthe handle 82 is rotated the disc I1 rotates and scans the opening il so that light from the lamp Il may P388 through the frame of the film ormay be projected on a screen. The opening II will be disaligned with the window il during the motion of the film 3l to its next position in which an adjacent frame is aligned with the window Il. Then the opening il scans this second frame. In this way the operation continlies with the opening Il scanning each frame of the film, and the disc I1 shutting of! the light during that period of time that the frames of the nlm pass from one position aligned with the opening I5 to its next position aligned with said opening Il.

The illm may be changed by opening the door i I and slipping the rollers 2! and Il off the shafts 22 and 2l. 'I'he film may be replaced with another motlon picture film or with the same nlm. However. it is necessary that the parts be properly synchronized for the new position of the film I8. or new fl This synchronization is accomplished in the following manner:

One of the frames of the lm 33 is aligned with the opening Il so that it is nearly completely exposed through the opening II with the next adjacent frame of the nlm located at one side of the opening. pulled upwards so as to disengege the friction element Il with the socket )I which frees the disc Il. Thedisc llisthenturnedsoastoset the opening Il to the rear end of the frame ex posed through the window il. The spindle il is then released and the spring Il returns it to a position in wluch ,the friction element 8l couples the spindle i! with the hollow shaft Il. The parts are now properly synchronized.

The support frame 23 may be slipped of! the sharia Il and 22 whenfthe door lisis open. and the spools Il and il are removed.

It to be understood that picture device is very inexpensive and may be used asatoy.withanytypeoffilmmadeof Celluloid. composition. continuous paper strip or of any other suitable material with or without the edge perforations. 'I'he picture on the film may be printed either lengthwise or along its width as desired.

While I have illustrated and described the `pcefer-red embodiments of my invention, it is to heA not limit myself to the prei understood that I do else constructions herein disclosed and the right is reserved to all changes and modiilcations ing within the scope of the invention as in the appended claims.

Having thus described my invention. what I claim as new, and desire States Letters Patent is:

1. In a pocket motion having an opening in on side. a disc rotatively rotates. means within said a web of a motion picture open, ing,syn v means -for rotating said disc and moving said film. and means for varying relative position 2. In a pocket motion picture device. having an opening in one side. a disc rotatively mounted beneath said opening and having a slot which scans across said opening when said disc disc and moving said film, and means for varying the relative position of said slot and a frame of said film. said casing having a front wall hingedly supported to comprise a door. said means for supporting said web Vcomprising a pair of shafts rotatively mountedgon one of the walls of the casing and extending into openings in the door wall of said casing. and spools removably mounted on said shafts and supporting the film having said web. and a support frame removably mounted on said shafts and having nnger. poropenings to slip on to said tions projecting from said rod. i

'nien the spinale n al thispock'etmotiom.

to secure by United' picture device. a l

3. In a pocket motion picture device, a casing having an opening in one side, a disc rotatively mounted beneath said opening and having a slot which scans across said opening when said disc rotates, means within said casing for supporting a web of a motion picture film across said opening, synchronized means for rotating said disc and moving said nlm, and means for varying the relative position of said slot and a frame of said nlm, comprising a spindle rotatively mounted on a. wall of said casing and supporting said disc, a hollow shaft rotatively supported and receiving a portion of said spindle, resilient means for urging said spindle and hollow shaft axially relative to each other, and a friction element on one of these parts engaging a socket element on the other of these parts under said axial urging means.

4. In a pocket motion picture device, a casing having an opening in one side, a telescopic shaft including a tubular section rotatively supported on one wall of said casing and a spindle section rotatively and slidably extended through an opposite wall of said casing, said spindle section having its inner end slidably and rotatively extended into the inner end of said tubularsection, a disc xedly mounted on said spindle section and having a slot scanning said opening when said disc rotates, means for supporting a motion picture film across said opening, synchronized 3 means for moving said flhn and for rotating said disc and connected with said tubular shaft section, a friction ele t on said spindle section engageable with a c mplementary socket member in said tubular section for locking said sections together for unitary rotation, and means urging said shaft sections to engage said friction element into said socket member, whereby said spindle section may be pulled outward to free said friction element from said socket member permitting said spindle section to be rotated independently of said tubular section.

5. In a pocket motion picture device, a casing having an opening in one side, a telescopic shaft includingga tubular section rotatively supported on one wall of said casing and a spindle section rotatively and slidably extended through an opposite wall of said casing, said spindle section having its inner end slidably and rotatively extended into the inner end of said tubular section, a disc flxedly mounted on said spindle section and having a slot scanning said opening When said disc rotates, means for supporting a motion picture film across said opening, synchronized means for moving said film and for rotating said disc and connected with said tubular shaft section, a friction element on said spindle section engageable 'with a complementary socket member in said tubular section for locking said sections together for unitary rotation, and means urging said shaft sections to engage said friction element into said socket member, whereby said spindle section may be pulled outward to free said friction element from said socket member permitting said spindle section to be rotated independently of said tubular section, comprising a washer fixedly mounted within said tubular section and through which said spindle section freely passes, a head fixedly mounted on the inner end of said spindle section, and an expansion spring coaxially mounted on said spindle section and operating between said washer and head.

6. In a pocket motion picture device, a casing having an opening in one side, a telescopic shaft including a tubular section rotatively supported on one wall of said casing and a spindle section rotatively and slidably extended through an opposite Wall of said casing, said spindle section having its inner end slidably and rotatively extended into the inner end of said tubular section, a disc xedly mounted on said spindle section and having a slot scanning said opening when said disc rotates, means for supporting a motion picture film across said opening, synchronized means for moving said film and for rotating said disc and connected with said tubular shaft section, a friction element on said spindle section engageable with a complementary socket member in said tubular section for locking said sections together for unitary rotation,

Aand means urging said shaft sections to engage said friction element into said socket member,4

whereby said spindle section may be pulled outward to free said friction element from said socket member permitting said spindle section. to be rotated independently of said tubular section, said friction element comprising a conical shaped rubber element mounted on said spindle section and engaging a complementary shaped receiving socket forming said socket member.

MANUEL G. HORWITZ. 

